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旋轉對稱 Rotational symmetry
Author:
TANG TSZ YUEN
Topic:
Symmetry
GeoGebra
New Resources
拼砌四邊形
錐體建築師
畫出對稱圖形
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
Discover Resources
Bearings
文字工具：設定旋轉文字位置
linkage
活工(二)Q1
等距曲线ggb作图法
Discover Topics
Logic
Subtraction
Natural Numbers
Congruence
Pythagoras or Pythagorean Theorem